M4 refers to M3 + All deposits with post office

Consider the following statements regarding the measures of money supply in India-
1. M1 refers to currency with the public + demand deposits with the banking system + other deposits with the RBI
2. M4 refers to M3 + All deposits with post office
Choose the correct answer from the statements given above-
(a) Only 1
(b) Only 2
(c) 1 & 2
(d) None of the above